protected Object newInitialFlow() {
MonitorSet fullSet = new MonitorSet();
fullSet.add("&");
return fullSet;
// return fullSet.clone();
}
// STEP 5: Define flow equations.
// in(s) = ( out(s) minus defs(s) ) union uses(s)
//
protected void flowThrough(Object inValue, Object unit, Object outValue) {
MonitorSet in = (MonitorSet) inValue;
MonitorSet out = (MonitorSet) outValue;
JPegStmt s = (JPegStmt) unit;
Tag tag = (Tag) s.getTags().get(0);
// System.out.println("s: "+tag+" "+s);
// Copy in to out
// if (in.contains("&")) in.remove("&");
in.copy(out);
// System.out.println("-----in: ");
// in.test();
if (in.size() > 0) {
if (!s.getName().equals("waiting") && !s.getName().equals("notified-entry"))
updateMonitor(in, unit);
}
String objName = s.getObject();
// if (objName == null) throw new RuntimeException("null object: "+s.getUnit());
if (s.getName().equals("entry") || s.getName().equals("exit")) {
if (out.contains("&")) out.remove("&");
Object obj = out.getMonitorDepth(objName);
if (obj == null) {
if (s.getName().equals("entry")) {
MonitorDepth md = new MonitorDepth(objName, 1);
out.add(md);
// System.out.println("add to out: "+md.getObjName()+" "+md.getDepth());
}
/*
else{
throw new RuntimeException("The monitor depth can not be decreased at "+
(Tag)((JPegStmt)s).getTags().get(0)+" "+unit);
}
*/
} else {
// System.out.println("obj: "+obj);
if (obj instanceof MonitorDepth) {
MonitorDepth md = (MonitorDepth) obj;
if (s.getName().equals("entry")) {
md.increaseDepth();
// System.out.println("===increase depth===");
} else {
if (md.getDepth() > 1) {
// System.out.println("===decrease depth==");
md.decreaseDepth();
} else if (md.getDepth() == 1) {
// System.out.println("===remove monitordepth: "+md);
out.remove(md);
} else throw new RuntimeException("The monitor depth can not be decreased at " + unit);
}
} else throw new RuntimeException("MonitorSet contains non MonitorDepth element!");
}
}
// System.out.println("-----out: "+out);
// out.test();
// testForDebug();
}